Infectious Disease Society of America (IDSA) – Guidelines Guidelines for the Selections of Anti-infective Agents for Complicated Intra-Abdominal Infections 2010. Go to https://www.idsociety.org/Guidelines/Patient_Care/IDSA_Practice_Guidelines/Infections_By_Organ_System-81567/Intra-abdominal/Intra-abdominal_Infections/ Diagnosis and Management of Complicated Intra-abdominal Infection in Adults and Children: Guidelines by the Surgical Infection Society and the Infectious Diseases Society of America